If wrasslin was real and I was in CM Punk's shoes, I would still be somewhat leery of Heyman and wouldn't want him in my corner based on the fact that he could screw me by tipping over the ladder when I'm on it. Heyman gave a speech where he swore on his children that despite being a habitual liar, he was telling the truth when he said he had nothing to do with Brock attacking Punk. And I personally wouldn't believe a second of it considering the week before, Mark Henry swore on not just his kids but his wife and his whole family that he was retiring, only to reveal he was lying just a few minutes later... and yet Punk believes Heyman, a man who has a reputation for bold faced lies?
I think it'd be nice if when the reveal that Heyman was in cahoots with Brock happens, if Punk said he still had doubts the whole time, even after Heyman's explanation on Raw. Otherwise, Punk not wanting Heyman to be at ringside is just Punk wanting to stand on his own.